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Answer : This is a common problem in all Lenovo laptops. I also have faced this problem so many times. For solving this please go to the link(link of official Lenovo's support site) and download latest bios setup and install it. It will update your bios and all will be all right. Download bios set for window 8.1 and install it. The manual also is given in PDF format. http://support.lenovo.com/in/hi/products/laptops-and-netbooks/lenovo-g-series-laptops/lenovo-g580-notebook Update: After this again the same problem happens with me but this time I already have latest BIOS version installed in my system and the Lenovo don't allow the installation of same or lower version of the BIOS in existing latest BIOS. So I stuck there and can not do anything. I also approached to the Lenovo service center but they are also helpless they suggest me to change the motherboard which cost me around 10000 INR.

Answer : You could resolve the error by repeating the steps : Run the installer. Open a shell ( ALT + F2 ). Create the directory cdrom directly on the root of the file system: mkdir /cdrom Note : If you got problems making the directory /cdrom, disable the CD-rom player in BIOS or disconnect the cable Mount the USB as if it is a CD-ROM: mount -t vfat /dev/sdb1 /cdrom Where sdb1 is your USB device. You could carry on installation now After executing mount -t vfat /dev/sdb1 /cdrom , cd into the /cdrom directory and do an ls to see if the files are there. Then press ALT - F1 to go back, continue and re-select "detect CDROM" Source :ubuntu and debian Another layman solution was : when the Window shows CDROM couldn't be mounted , Unplug your USB from system and re insert it wait for mount/ detection (usb LED glow) Hit Continue You could do what I did. Hit escape, type install, hit enter, skip CD drive. If you ...

Answer : The emulator is just slow, there is not much you can do about it. See https://stackoverflow.com/questions/1554099/slow-android-emulator To maximize the accuracy between emulator and real devices, Google emulator uses ARM opcode, a kind of machine language. It must convert from ARM opcode to Intel opcode. That's why it's slow. My computer is 3GB RAM but it's still slow and lagged. The problem seems not to be RAM but CPU. Improving CPU will improve the emulator. To use emulator more effectively, this is my experience: Don't close emulator everytime you run your application. Scale the emulator screen smaller. Disable snapshot (Yes, it's useful but it takes time to close the emulator). Specify a file path for SD card image file. I use only one SD card for many AVDs. If you got any problems in adb, just reset adb, don't close emulator. Open few programs in your operating sytem. If you are using Windows, don't ever close emulator. Do it c...

Answer : yes, We just released a sample Linux VHD that you can boot any computer. You can find more info here: Download and boot your physical PC, also runs as vm - http://www.vmlite.com/index.php/forums/17-vboot/1864-linux-vhd-boot-available-download-and-boot-your-physical-pc-also-runs-as-vm 1 Linux as Real Appliance With VBoot for Linux, you can pre-install and pre-configure Linux OS and its applications, then distribute the resulting virtual disk file in VHD format. The vhd can boot a real computer, with configuration and apps instantly available. This way, operating systems are truly manageable, as simple as files. We call such a Linux VHD to be a real appliance, in the sense that it boots physical computers. It's very easy to setup and boot a computer with a vhd file. You download the vhd file, drop it to Windows or Linux file system, then configure the boot loader, and reboot the computer. 2 Linux as Virtual Appliance The exact same vhd file also runs as a vi...

Answer : Disable the hibernation mode and Fast Boot in Windows. Open command prompt as administrator and execute : powercfg /h off Open the legacy version of the Windows Control Panel (not the modern version). Select Energy Settings , enable show hidden settings and uncheck Fast Boot. After having done this - shutdown the computer completely - do NOT reboot. Boot into the BIOS and select Ubuntu as the default operating system to boot. Update : In case there is no Ubuntu entry to be found in the BIOS / UEFI settings, re-install the GRUB boot loader to your Ubuntu installation in EFI mode. Boot from the Ubuntu installation media - open a terminal and execute: sudo mount /dev/sdXXX /mnt sudo mount /dev/sdXX /mnt/boot/efi for i in /dev /dev/pts /proc /sys /run; do sudo mount -B $i /mnt$i; done sudo chroot /mnt grub-install /dev/sdX update-grub Note: sdX = disk | sdXX = efi partition | sdXXX = system partition To identify the partition numbers use G...